RT info:eu-repo/semantics/article T1 DAX-1 expression in human breast cancer: comparison with estrogen receptors ER-α, ER-ß and androgen receptor status A1 Conde Martín, María Isabel A1 Alfaro Sánchez, Juan María A1 Paniagua Gómez-Álvarez, Ricardo A1 Fraile Laiz, Benito A1 Arenas Jiménez, María Isabel K1 Breast cancer K1 Cáncer de mama K1 Androgen receptor K1 DAX-1 K1 Estrogen receptor-α K1 Estrogen receptor-β K1 Bioquímica K1 Biochemistry K1 Science K1 Ciencia AB So far there have been no reports on the expression pattern of DAX-1 (dosage-sensitive sex reversal, adrenal hypoplasia critical region, on chromosome X, gene 1) in human breast cells and its relationship to the estrogen receptors, ER-¿ and ER-ß, and the androgen receptor (AR).In this study we evaluated, by immunohistochemistry and Western blot analysis, the presence and distribution of DAX-1 in benign breast disease (BBD), in situ carcinoma (CIS), and ductal and lobular breast carcinomas.In BBD and breast carcinomas, DAX-1 was present in both the nuclei and the cytoplasm of epithelial cells, although in infiltrative carcinomas the percentage of nuclear immunoreaction was higher than in CIS. An important relation was observed between DAX-1 and AR expression and between this orphan receptor and nodal status.DAX-1 might modify the AR and ER-ß intracellular location, and because a direct positive relation between the expression of these three receptors was found it could be assumed that the presence of DAX-1 in neoplastic cells might indicate a possible failure of endocrine therapies PB BioMed Central Ltd. SN 1465-5411 YR 2004 FD 2004 LK http://hdl.handle.net/10017/166 UL http://hdl.handle.net/10017/166 LA eng NO Universidad de Alcalá DS MINDS@UW RD 01-may-2024